Background: Self-report questionnaires play an important role as outcome measures in shoulder research. Having an estimate of the measurement error of these ...

Those of us in the business of psychological measurement use the terms reliability and validity a lot. You've probably seen those terms on the Psychology Today website (they appear thousands of times) ...

Is the purpose of the new joint industry committee (JIC) about improving TV audience measurement quality or is it about gamesmanship? Is it even possible to validly measure viewing using alternative ...

Background Novel treatment interventions are advancing rapidly in the management of hip and groin disability in the physically active young to middle-aged population. Objective To recommend the most ...

This is the second article in a 5-part series discussing different aspects of the current mainstream, biomedical approach to mental health diagnosis. For the sake of brevity, I’m assuming readers ...

This project investigates the criterion and structural validity of the recent published abbreviated version of the Conformity to Masculine Norms Inventory (Mahalik et al., 2003, Levant et al., 2020).

Consumer Reports receives a wide range of questions from enthusiasts and the auto industry looking for a deeper understanding of the methodology used in the reliability section of our latest Annual ...

Muscle fatigue and lateral deficit are associated with the risk of hamstring injuries (HSIs) (McCall et al. 2014). Frequent testing of hamstring strength (HSS) can help prevent HSIs. Pilot testing ...